Chapter 4: Reactivity of Metals

What are minerals?

Naturally occurring solid elements or compounds with definite crystalline structures and chemical compositions.

Give examples of elemental minerals.

Gold, diamond, and silver.

What is the scientific name for hematite?

Ferrum (III) oxide.

What elements make up bauxite?

Aluminium and oxygen.

What is the Reactivity Series of Metals?

A list of metals arranged based on their reactivity towards oxygen.

Which metal is the most reactive in the reactivity series?

Potassium (K).

Which metal is the least reactive in the reactivity series?

Gold (Au).

How are metals higher than carbon extracted from their ores?

Through electrolysis of metallic compounds in molten form.

How are metals lower than carbon extracted from their ores?

Through the reduction of metal oxides by carbon.

What is carbon monoxide's role in the blast furnace?

It acts as a strong reducing agent to reduce iron oxide to iron.

What is the purpose of limestone in a blast furnace?

It decomposes into calcium oxide to remove impurities as slag.

What is solidified molten iron from a blast furnace called?

Cast iron.

What is molten slag used for after being tapped off?

To make the base of buildings and roads.

What causes water pollution during mining activities?

Ore cleaning.

What causes soil erosion during mining?

Ore mining.